/* CogHalo Labs — Design Tokens & Base
   Dark-first system. Charcoal grounds, one electric cyan, Space Grotesk + Space Mono. */

:root{
  /* ---- Grounds ---- */
  --bg-0:#090B0E;   /* deepest / page */
  --bg-1:#0F1318;   /* charcoal primary */
  --bg-2:#141A21;   /* panel */
  --bg-3:#1A222B;   /* raised / hover */
  --bg-inset:#0B0E12;

  /* ---- Lines ---- */
  --line:#212B35;
  --line-2:#2C3741;
  --line-strong:#3C4757;

  /* ---- Text ---- */
  --ink:#E8EEF2;
  --ink-2:#AEB9C5;
  --muted:#6B7A8D;
  --faint:#46525F;

  /* ---- Accent ---- */
  --cyan:#2FE6DA;
  --cyan-bright:#67F6EC;
  --cyan-deep:#15B3A8;
  --cyan-dim:rgba(47,230,218,.12);
  --cyan-line:rgba(47,230,218,.35);
  --cyan-glow:rgba(47,230,218,.55);

  /* ---- Data-viz only (used sparingly, never as brand color) ---- */
  --viz-cyan:#2FE6DA;
  --viz-blue:#5B8CFF;
  --viz-violet:#9B7CFF;
  --viz-grid:rgba(255,255,255,.05);

  /* ---- Type ---- */
  --font-sans:'Space Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'Space Mono','SFMono-Regular',ui-monospace,monospace;
  --fs-display:clamp(48px,7.2vw,108px);
  --fs-h1:clamp(34px,4.6vw,64px);
  --fs-h2:clamp(26px,3vw,42px);
  --fs-h3:22px;
  --fs-lg:19px;
  --fs-body:17px;
  --fs-sm:14px;
  --fs-xs:12px;
  --lh-tight:1.04;
  --lh-snug:1.18;
  --lh-body:1.62;

  /* ---- Spacing ---- */
  --s-1:4px;--s-2:8px;--s-3:12px;--s-4:16px;--s-5:24px;--s-6:32px;
  --s-7:48px;--s-8:64px;--s-9:96px;--s-10:128px;--s-11:160px;

  /* ---- Radius ---- */
  --r-sm:8px;--r:14px;--r-lg:22px;--r-xl:30px;--r-pill:999px;

  /* ---- Elevation & glow ---- */
  --shadow-1:0 1px 0 rgba(255,255,255,.03) inset, 0 8px 24px rgba(0,0,0,.45);
  --shadow-2:0 24px 60px rgba(0,0,0,.55);
  --glow-sm:0 0 14px rgba(47,230,218,.35);
  --glow-md:0 0 28px rgba(47,230,218,.4);

  /* ---- Layout ---- */
  --maxw:1240px;
  --nav-h:72px;
  --ease:cubic-bezier(.4,.12,.2,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg-0);color:var(--ink);
  font-family:var(--font-sans);font-size:var(--fs-body);line-height:var(--lh-body);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
::selection{background:rgba(47,230,218,.25);color:#fff;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:600;letter-spacing:-.02em;line-height:var(--lh-snug);}

/* ---- Layout helpers ---- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--s-6);}
.section{padding:var(--s-10) 0;}
.stack{display:flex;flex-direction:column;}
.row{display:flex;align-items:center;}
.eyebrow,.kicker{
  font-family:var(--font-mono);font-size:var(--fs-xs);font-weight:400;
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
  display:inline-flex;align-items:center;gap:10px;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.7;}
.lede{font-size:var(--fs-lg);color:var(--ink-2);line-height:var(--lh-body);}
.muted{color:var(--muted);}

/* ---- Buttons ---- */
.btn{
  font-family:var(--font-sans);font-size:var(--fs-sm);font-weight:500;letter-spacing:.01em;
  display:inline-flex;align-items:center;gap:10px;cursor:pointer;border:none;
  padding:14px 24px;border-radius:var(--r-pill);transition:all .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--cyan);color:#08110F;box-shadow:0 0 0 0 rgba(47,230,218,0);}
.btn-primary:hover{background:var(--cyan-bright);box-shadow:var(--glow-md);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-strong);}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan-bright);}
.btn-link{
  font-family:var(--font-mono);font-size:var(--fs-sm);letter-spacing:.04em;color:var(--cyan);
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;transition:gap .2s var(--ease);
}
.btn-link:hover{gap:14px;color:var(--cyan-bright);}
.btn-link .arr{transition:transform .2s var(--ease);}
.btn-link:hover .arr{transform:translateX(3px);}

/* ---- Pills / tags ---- */
.pill{
  font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-2);border:1px solid var(--line-2);border-radius:var(--r-pill);
  padding:6px 14px;display:inline-flex;align-items:center;gap:8px;background:var(--bg-2);
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan-glow);}

/* ---- Cards ---- */
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:var(--s-6);transition:border-color .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
}
.card:hover{border-color:var(--line-strong);background:var(--bg-3);transform:translateY(-3px);}

/* ---- Nav ---- */
.nav{
  position:sticky;top:0;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;
  background:rgba(9,11,14,.72);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav .container{display:flex;align-items:center;justify-content:space-between;width:100%;}
.brand{display:flex;align-items:center;gap:12px;font-weight:600;letter-spacing:.14em;font-size:15px;}
.brand .wm-sub{font-family:var(--font-mono);font-size:9px;letter-spacing:.2em;color:var(--muted);}
.nav-links{display:flex;align-items:center;gap:var(--s-6);}
.nav-links a{font-size:var(--fs-sm);color:var(--ink-2);transition:color .2s var(--ease);}
.nav-links a:hover{color:var(--ink);}

/* ---- Footer ---- */
.footer{border-top:1px solid var(--line);padding:var(--s-9) 0 var(--s-7);background:var(--bg-1);}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--s-7);}
.footer h5{font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:var(--s-4);}
.footer a{display:block;color:var(--ink-2);font-size:var(--fs-sm);padding:5px 0;transition:color .2s var(--ease);}
.footer a:hover{color:var(--cyan);}

/* ---- Constellation canvas bg ---- */
.const-bg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;}

/* ---- Scroll reveal ---- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1!important;transform:none!important;}
  html{scroll-behavior:auto;}
}

/* ---- Mobile nav toggle + drawer ---- */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;
  background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-sm);cursor:pointer;padding:0 10px;}
.nav-toggle span{display:block;height:1.5px;background:var(--ink);transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
.nav-drawer{position:fixed;inset:0;z-index:60;background:rgba(9,11,14,.96);backdrop-filter:blur(8px);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);}
.nav-drawer.open{opacity:1;pointer-events:auto;}
.nav-drawer-inner{position:absolute;top:var(--nav-h);left:0;right:0;display:flex;flex-direction:column;gap:6px;
  padding:32px;transform:translateY(-12px);transition:transform .3s var(--ease);}
.nav-drawer.open .nav-drawer-inner{transform:none;}
.nav-drawer-inner a{font-size:24px;font-weight:500;color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line);}
.nav-drawer-inner a.btn{margin-top:16px;border-bottom:none;justify-content:center;font-size:var(--fs-sm);}

/* ---- Form validation + success ---- */
.input.invalid{border-color:var(--no, #E0556B);box-shadow:0 0 0 3px rgba(224,85,107,.16);}
.form-done{display:flex;align-items:center;gap:12px;justify-content:center;color:var(--ink);
  font-size:var(--fs-body);padding:14px 0;}
.form-done .check{width:24px;height:24px;border-radius:50%;background:var(--cyan);color:#08110F;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex:none;box-shadow:var(--glow-sm);}

@media (max-width:860px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:var(--s-6);}
  .section{padding:var(--s-8) 0;}
}